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Date: Fri, 6 Jul 2012 16:09:42 -0400
From: <s-paulraj@...com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <cyril@...com>,
<grant.likely@...retlab.ca>, <linux-keystone@...t.ti.com>
CC: Sandeep Paulraj <s-paulraj@...com>
Subject: [PATCH 2/4] phylib: add context argument to adjust link callback
From: Sandeep Paulraj <s-paulraj@...com>
This patch introduces a context argument for the adjust link callback. This
context information is set at phy_connect() (and its variants), and is passed
back into the adjust_link callbacks on link state change events.
Such context information is necessary when a network device has multiple
underlying ports. Specifically, this comes into play when the netdev is
really one of the ports going into an on-chip switch of some sort.
Signed-off-by: Cyril Chemparathy <cyril@...com>
Signed-off-by: Sandeep Paulraj <s-paulraj@...com>
---
drivers/net/phy/phy.c | 6 +++---
drivers/net/phy/phy_device.c | 23 +++++++++++++++--------
include/linux/phy.h | 20 ++++++++++++--------
3 files changed, 30 insertions(+), 19 deletions(-)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 36ca912..491a608 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -433,7 +433,7 @@ static void phy_change(struct work_struct *work);
* function.
*/
void phy_start_machine(struct phy_device *phydev,
- void (*handler)(struct net_device *))
+ void (*handler)(struct net_device *, void *context))
{
phydev->adjust_state = handler;
@@ -763,7 +763,7 @@ EXPORT_SYMBOL(phy_start);
static inline void phy_adjust_link(struct phy_device *phydev)
{
- phydev->adjust_link(phydev->attached_dev);
+ phydev->adjust_link(phydev->attached_dev, phydev->context);
}
/**
@@ -781,7 +781,7 @@ void phy_state_machine(struct work_struct *work)
mutex_lock(&phydev->lock);
if (phydev->adjust_state)
- phydev->adjust_state(phydev->attached_dev);
+ phydev->adjust_state(phydev->attached_dev, phydev->context);
switch(phydev->state) {
case PHY_DOWN:
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index de86a55..a4e5313 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -310,6 +310,7 @@ EXPORT_SYMBOL(phy_find_first);
* phy_prepare_link - prepares the PHY layer to monitor link status
* @phydev: target phy_device struct
* @handler: callback function for link status change notifications
+ * @context: context information for callback handler
*
* Description: Tells the PHY infrastructure to handle the
* gory details on monitoring link status (whether through
@@ -319,9 +320,11 @@ EXPORT_SYMBOL(phy_find_first);
* this function.
*/
static void phy_prepare_link(struct phy_device *phydev,
- void (*handler)(struct net_device *))
+ void (*handler)(struct net_device *, void *context),
+ void *context)
{
phydev->adjust_link = handler;
+ phydev->context = context;
}
/**
@@ -331,10 +334,11 @@ static void phy_prepare_link(struct phy_device *phydev,
* @handler: callback function for state change notifications
* @flags: PHY device's dev_flags
* @interface: PHY device's interface
+ * @context: context information for callback handler
*/
int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
- void (*handler)(struct net_device *), u32 flags,
- phy_interface_t interface)
+ void (*handler)(struct net_device *, void *context),
+ u32 flags, phy_interface_t interface, void *context)
{
int rc;
@@ -342,7 +346,7 @@ int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
if (rc)
return rc;
- phy_prepare_link(phydev, handler);
+ phy_prepare_link(phydev, handler, context);
phy_start_machine(phydev, NULL);
if (phydev->irq > 0)
phy_start_interrupts(phydev);
@@ -358,6 +362,7 @@ EXPORT_SYMBOL(phy_connect_direct);
* @handler: callback function for state change notifications
* @flags: PHY device's dev_flags
* @interface: PHY device's interface
+ * @context: context information for callback handler
*
* Description: Convenience function for connecting ethernet
* devices to PHY devices. The default behavior is for
@@ -367,9 +372,10 @@ EXPORT_SYMBOL(phy_connect_direct);
* choose to call only the subset of functions which provide
* the desired functionality.
*/
-struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
- void (*handler)(struct net_device *), u32 flags,
- phy_interface_t interface)
+struct phy_device *
+phy_connect(struct net_device *dev, const char *bus_id,
+ void (*handler)(struct net_device *, void *context),
+ u32 flags, phy_interface_t interface, void *context)
{
struct phy_device *phydev;
struct device *d;
@@ -384,7 +390,8 @@ struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
}
phydev = to_phy_device(d);
- rc = phy_connect_direct(dev, phydev, handler, flags, interface);
+ rc = phy_connect_direct(dev, phydev, handler, flags, interface,
+ context);
if (rc)
return ERR_PTR(rc);
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c291cae..596b8fe 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -263,6 +263,7 @@ enum phy_state {
* changes in the link state.
* adjust_state: Callback for the enet driver to respond to
* changes in the state machine.
+ * context: Context information for adjust_link and adjust_state callbacks
*
* speed, duplex, pause, supported, advertising, and
* autoneg are used like in mii_if_info
@@ -337,9 +338,11 @@ struct phy_device {
struct net_device *attached_dev;
- void (*adjust_link)(struct net_device *dev);
+ void (*adjust_link)(struct net_device *dev, void *context);
- void (*adjust_state)(struct net_device *dev);
+ void (*adjust_state)(struct net_device *dev, void *context);
+
+ void *context;
};
#define to_phy_device(d) container_of(d, struct phy_device, dev)
@@ -487,11 +490,12 @@ struct phy_device * phy_attach(struct net_device *dev,
const char *bus_id, u32 flags, phy_interface_t interface);
struct phy_device *phy_find_first(struct mii_bus *bus);
int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
- void (*handler)(struct net_device *), u32 flags,
- phy_interface_t interface);
-struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
- void (*handler)(struct net_device *), u32 flags,
- phy_interface_t interface);
+ void (*handler)(struct net_device *, void *context),
+ u32 flags, phy_interface_t interface, void *context);
+struct phy_device *
+phy_connect(struct net_device *dev, const char *bus_id,
+ void (*handler)(struct net_device *, void *context),
+ u32 flags, phy_interface_t interface, void *context);
void phy_disconnect(struct phy_device *phydev);
void phy_detach(struct phy_device *phydev);
void phy_start(struct phy_device *phydev);
@@ -514,7 +518,7 @@ void phy_driver_unregister(struct phy_driver *drv);
int phy_driver_register(struct phy_driver *new_driver);
void phy_state_machine(struct work_struct *work);
void phy_start_machine(struct phy_device *phydev,
- void (*handler)(struct net_device *));
+ void (*handler)(struct net_device *, void *context));
void phy_stop_machine(struct phy_device *phydev);
int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
--
1.7.9.5
--
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